Godox GX User manual

Brand: Godox

Model: GX

Type: User manual

This manual is also suitable for

GX-SEKONIC-A Wireless Module

Godox GX is a wireless module that allows you to remotely control professional lighting for photography. Compatible with the Godox X series 2.4G receiver system, it incorporates a built-in 8-bit microcomputer, a transmission amplifier, and a pattern antenna. With a transmission output power of +20dBm and a range of up to 100 meters, the Godox GX provides reliable triggering and stable signal transmission. It features 32 channels and 16 groups for flexible grouping and control, allowing you to set up multiple lights and adjust them individually or as a group.

Model GX-SEKONIC-A

ＵｓｅｒｓＭａｎｕａｌ

批准检证负责人

Godox stamped

Wireless module/GX-SEKONIC-A

Table of Contents

Chapter 1 Overview .......................................................................................................................................................................... 3

1.1 Scope of application ................................................................................................................................................................ 3

1.2 Product overview .................................................................................................................................................................... 3

Chapter 2 Appearance and structure ................................................................................................................................................. 5

2.1 Appearance and dimensions ....................................................................................................................................................... 5

Chapter 3 Electrical Specifications ................................................................................................................................................... 6

3.1 Host connection interface ....................................................................................................................................................... 6

Chapter 4 Wireless Specifications .................................................................................................................................................... 8

4.1 Physical specifications ............................................................................................................................................................ 8

4.2 Protocol specifications ............................................................................................................................................................ 8

Chapter 5 Internal Control ................................................................................................................................................................ 9

Chapter 6 Embedded Specifications ............................................................................................................................................... 10

6.1 Mechanical conditions .............................................................................................................................................................. 10

6.2 Electrical conditions .............................................................................................................................................................. 11

Chapter 7 Radio Compliance .......................................................................................................................................................... 12

7.1 Europe ................................................................................................................................................................................... 12

7.2 United States and Canada ..................................................................................................................................................... 13

Chapter 1 Overview

1.1 Scope of application

This specification describes the operation and handling of the following products.

Customer name: SEKONIC CORPORATION

Product name: Transmitted radio wave module model GX-SEKONIC-A

Product code: GX

Related Regulations: Radio Law, Specified Low Power Radio Equipment ARIB-T66

FCC 47CFR Part15.C, Canada RSS Gen/RSS 210

EU RE Directive 2014/53/EU, ETSI EN 300 440,

EN62479

Environmental protection: Lead-free solder compatible

SEKONIC SKGP

1.2 Product overview

"Transmission radio wave module" is a board module product for the wireless transmission function that uses the

2.4 GHz ISM band.

This product is designed for remote control of professional lighting for photography by incorporating it into

products such as Sekonic's light meter/color meter.

The "Transmission Radio Module" (Model GX) is compatible with the Godox X series 2.4G receiver system as a

compatible radio system.

The internal function of the "transmit radio wave module" (Model GX) consists of a 8-bit microcomputer made by

TI, a transmission amplifier with +20dBm output, and the antenna is a pattern antenna on the circuit

board.

The following figure shows the outline of the internal configuration of this product and the connection with the

embedded host

Above: Connect to the parent device with the 12-pin connector on the left side, and operate with the power

supply (DC3V) from the parent device.

The main connection signals are the trigger switch signal (SyncIn) and UART serial communication (3V).

Exposure Meter microcomputer

CC2592

PA-ENLNA-EN

Port Control

CC2510

Wireless module MCU

with RF Function

Interrupt

USART Control

RF Control

RxDTxD READY CLEARTOSENDSYNC_IN# RESET

Chapter 2 Appearance and structure

2.1 Appearance and dimensions

This product is a printed circuit board module and has a structure in which electronic components such as

semiconductors are soldered on one side of the circuit board, and a shield case for protecting the circuit components

is soldered on it.

The individual manufacturing number, the certification number for compliance with wireless regulations, etc. are

displayed on the shield case.

Refer to the drawings for details of the external shape and structure.

External dimensions (outline) Width 24.70±0.3mm x length 28.70±0.3mm x thickness 8.44mm +0.9/-0.6mm

(including connector height)

Chapter 3 Electrical Specifications

3.1 Host connection interface

This product is connected to the embedded master device with a 2.0 mm pitch/12-pin connector.

The signals to be connected are as follows.

Pin function Signal reliability

1 +3.3VDC Power supply +3.3V

2 (SYNC_OUT) None (Fixed ”1”)

3 SYNC_IN Input hardware triggering

0 : Triggering ON （over 100 usec）

1 : Triggering OFF

4 TX_Complete None

5 READY Status for trigger

0 ; Unable to receive trigger (Sending trigger)

1 : Able to receive trigger (Completed sending trigger)

6 CLEARTOSEND Status for receiving serial command

0 : Unable to receive serial command (Processing command)

1 :Able to receive serial command

7 TXD UART（ASYNC serial） Output data

8 RXD UART (ASYNC serial) Input data

9 RESET Reset module

0 : Reset ON （Over 1000 usec）

1 : Reset OFF

10 GND Ground

11 ANTTENA For jig test

12 GND Ground

The connector on this product is 200-FH-1-12-43-S-28-24-GO-A (socket), and the square pin type header pin

(product example: IK210SM-S12G-T15) is suitable as the parent device side connector.

・Power supply (1 pin)

Input power supply voltage DC3.0V～3.6V, current consumption 0.09A maximum

・Trigger signal (3-pin)

Active low (minimum 100uS width) transmission request signal.

It sends a “TRIGGER” signal based on the preselected radio system specifications.

・Internal operation status signal (4,5)

This is a 3V-CMOS logic signal that indicates the operating status of wireless transmission.

TX_COMPLETE/READY becomes Low when the trigger signal is recognized, and becomes High

when the transmission operation is completed.

・UART interface (7,8 pin)

3V CMOS level UART interface signal. It can be directly connected to the MPU of the parent device.

Serial communication parameters Communication speed 38400bps, 8bit, No parity, Stop 1 bit

Do not connect RS232 level signals as this will damage the internal circuitry.

Use a level converter circuit when connecting a personal computer, etc.

・Reset signal (9 pin)

This is an active low hardware reset signal (minimum 1000uS width) that resets the internal

operation of the transmitting radio wave module from the parent device.

・ANTTENA signal (11 pin)

Active low Testing enable signal.

Chapter 4 Wireless Specifications

4.1 Physical specifications

Item Minimum Typical Maximum unit

Transmission frequency

range 2412.999634 2464.499756

MHz

Transmission channel Step 1.2 1.5 MHz

Frequency stability -50 +10 kHz

Transmit output power -0.5 +4.0 dBm

Antenna gain 0 dBi

4.2 Protocol specifications

This product has a mode compatible with two communication procedures of the system as the operation of wireless

transmission. The wireless transmission operation in these two modes is based on the CC2510Fx protocol of TI,

but the detailed definitions have their respective characteristics and are not compatible.

For example, the following parts are different

Channel number and physical frequency assignment

Concept of physical/logical channel and group control

Transmission data rate and data packet structure

The definition outline of each radio interface is as follows.

Characteristic items Godox Mode Unit

Modulation method MSK

Frequency channel definition Channel

Number Frequency

(GHz) Channel

Number Frequency

(GHz)

1 2.412999634 17 2.439499908

2 2.414499664 18 2.441749756

3 2.415999695 19 2.442999847

4 2.418000000 20 2.444499878

5 2.419499634 21 2.446749725

6 2.420999664 22 2.447999817

7 2.422999969 23 2.449499847

8 2.424500000 24 2.451749695

9 2.426749847 25 2.452999786

10 2.427999939 26 2.454499817

11 2.429499969 27 2.456749664

12 2.431749816 28 2.457999756

13 2.432999908 29 2.459499786

14 2.434499939 30 2.461749634

15 2.436249908 31 2.462999725

16 2.437999878 32 2.464499756

GHz

Transmission data rate 250 Kbps

Group control 16 groups + ALL

(Group settings are independent of each other,

combination specification is not possible

The default settings of the transmitting radio wave module at the first startup are as follows.

Godox mode、CH 1

Please refer to the firmware specifications for detailed operation and control.

Firmware Design Specification

Chapter 5 Internal Control

The operation of the transmission wave module model GX changes as follows.

"Start-up"

After the power is turned on and the hardware is reset, the module initializes the internal circuits,

outputs the module ID as a startup message to the UART interface, and then transitions to the

idle state.

"Idle"

When the module is idle, it waits for a command from the UART interface, and if no command

(or trigger signal) is received, there is no RF action.

"Trigger action"

The module can identify that the trigger signal (SYNC-IN) is low in all states. But it should following a

Prepare main flash Usart command, then the SYNC-IN signal comes.

After identifying the trigger signal, the trigger transmission operation is performed. (Minimum time of

trigger signal is 100uS or more) To implement one-shot trigger operation, do not set the trigger

signal to the Low state for 50mS or more.

"Command operation"

The module can receive UART commands in any state, When the command received from the UART

interface is valid, the processing specified by the command is executed. Command processing is a send

operation or a message response to the UART interface. After the command execution is completed, this

product transits to the idle state.

"Transmission operation"

As a transmission operation, the module controls the wireless circuit and transmits the wireless

message specified by the trigger signal or transmission request command in the preset wireless mode.

After execution of the transmission operation is completed, this product transits to the idle state.

Chapter 6 Embedded Specifications

The transmission radio wave module model GX is designed to be used by incorporating it into the Seconic

L-858-D exposure meter. It can be incorporated into other equipment, but it must meet the following

conditions.

6.1 Mechanical conditions

As shown in the figure below, the mechanical conditions for installing the module are as follows:

(CON) must be mechanically adapted. In addition, the space in which the board is installed does not allow

the wireless performance of the antenna installed in the module to be demonstrated simply by providing the

minimum board space.

Concept of required space (clearance)

Do not use metal or resin with an electrostatic shielding property for the casing (casing) of the

parent device to be incorporated. If the module part is covered with metal parts, radio waves

cannot be emitted to the outside.

In order to maximize the wireless performance (communication distance performance) of the

antenna, make sure that there is no object around the antenna part of the module.

Furthermore, even if a resin housing is used, the characteristics will deteriorate if the antenna

part of the module and the case are close to each other. To avoid this, make sure there is a gap of at least

3 mm between the back side of the module (the side without the component/shield case) and the resin

case of the embedded parent device.

Host equipment Casing

Module Board < 1.63mm thick >

Host Board (PCB)

[Module height]

8.44mm

Shield < 2.54mm height >

Header height

1.5mm

Topside –Clearance > 3 mm

Board Clearance ≒5.8 mm

6.2 Electrical conditions

(1) Connection of all functions in order to use all the functions of the module, connect the following signals.

Pin function Signal reliability

1 +3.3VDC Power supply +3.3V

2 (SYNC_OUT) None (Fixed ”1”)

3 SYNC_IN Input hardware triggering 0 : Triggering ON （over 100

usec） 1 : Triggering OFF

4 TX_Complete None

5 READY Status for trigger 0 ; Unable to receive trigger (Sending

trigger) 1 : Able to receive trigger (Completed sending

trigger)

6 CLEARTOSEND Status for receiving serial command 0 : Unable to receive

serial command (Processing command) 1 :Able to receive

serial command

7 TXD UART（ASYNC serial） Output data

8 RXD UART (ASYNC serial) Input data

9 RESET Reset module 0 : Reset ON （Over 1000 usec） 1 : Reset

OFF

10 GND Ground

11 ANTTENA Active Low for Testing usage

12 GND Ground

Chapter 7 Radio Compliance

The transmission radio wave module model GX uses radio waves in the 2.4 GHz band and can be used in most

countries and regions of the world without obtaining permission to use it wirelessly. It is necessary to comply with the

relevant regulations.

The transmission wave module model GX complies with the following laws and regulations.

7.1 Europe

The radio wave module model EP has been tested and manufactured based on the technical standards for

embedded wireless modules specified by the European Commission's Radio and Communication

Terminals Directive (RE Directive ), and bears the CE mark.

This product has been tested to the following basic radio and communication device directive (RE

Directive) 2014/53/EU radio wave equipment and health/safety requirements.

Wireless

equipment aticle 3(2) EN300 440 v2.2.1

Human body electromagnetic field exposure aticle 3(1)a EN62479

The manufacturer of the product incorporating this product shall retain the technical data of this product, ensure

that the wireless standard values and antenna performance do not deviate from the module specifications in the final

product state, and meet the requirements for installation. It is necessary to check. Please contact your sales representative

to obtain the test report.

Regarding EU directives for electronic devices other than wireless devices, it is necessary to confirm that they are

satisfied as final products. (Electromagnetic environment compatibility, low voltage directive, environmental directive, etc.)

Equipment incorporating this product must display the "CE mark" on the visible part of the product.

At that time, the following points are required.

・The CE mark can be reduced/enlarged, but the proportion must be in accordance with the regulations.

・The CE mark requires a minimum height of 5 mm.

・The CE mark is easy to see and should not disappear or come off.

For more information on CE marking requirements, please refer to Article 19 of the Radio &

Telecommunications Terminal Directive (RE Directive, 2014/53/EU).

Properly CE marked products can be sold and used within the EU and do not require local certification testing

in EU countries.

7.2 United States and Canada

This device complies with part 15 of the FCC Rules. Operation is subject to the following two

conditions:

(1) This device may not cause harmful interference, and

(2) this device must accept

any interference received, including interference that may cause undesired operation.

Any Changes or modifications not expressly approved by the party responsible for compliance

could void the user's authority to operate the equipment.

The device has been evaluated to meet general RF exposure requirement. The device can be

used in portable exposure condition without restriction.

If the FCC identification number is not visible when the module is installed inside another device,

then the outside of the device into which the module is installed must also display a label

referring to the enclosed module. This exterior label can use wording such as the following:

“Contains Transmitter Module FCC ID: 2ABYN-GX Or Contains FCC ID: 2ABYN-GX”

When the module is installed inside another device, the user manual of the host must contain

below warning statements;

1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two

conditions:

(1) This device may not cause harmful interference.

(2) This device must accept any interference received, including interference that may cause

undesired operation.

2. Changes or modifications not expressly approved by the party responsible for compliance

could void the user's authority to operate the equipment.

The devices must be installed and used in strict accordance with the manufacturer's instructions

as described in the user documentation that comes with the product.

Any company of the host device which install this modular with Single modular approval should

perform the test of radiated emissionand spurious emission according to FCC part 15C : 15.247

and 15.209 requirement,Only if the test result comply with FCC part 15C : 15.247 and 15.209

requirement，then the host can be sold legally.

Note: This equipment has been tested and found to comply with the limits for a Class B digital

device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable

protection against harmful interference in a residential installation. This equipment generates,

uses and can radiate radio frequency energy and, if not installed and used in accordance with the

instructions, may cause harmful interference to radio communications. However, there is no

guarantee that interference will not occur in a particular installation. If this equipment does

cause harmful interference to radio or television reception, which can be determined by turning

the equipment off and on, the user is encouraged to try to correct the interference by one or more

of the following measures:

—Reorient or relocate the receiving antenna.

—Increase the separation between the equipment and receiver.

—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

—Consult the dealer or an experienced radio/TV technician for help.

This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject

to the following two conditions:

(1) This device may not cause interference, and

(2) This device must accept any interference, including interference that may cause undesired

operation of the device.

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio

exempts de licence. L'exploitation est autorisée aux deux conditions suivantes: (1) l'appareil ne

doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage

radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement

The device has been evaluated to meet general RF exposure requirement. The device can be

used in portable exposure condition without restriction.

Le dispositif a été conçu pour rencontrer le général RF. Le dispositif peut être utilisé dans des

conditions de détention sans effet.

For a host manufacture's using a certified modular, if (1) the module's IC number is not visible

when installed in the host, or (2) if the host is marketed so that end users do not have

straightforward commonly used methods for access to remove the module so that the IC number

of the module is visible; then an additional permanent label referring to the enclosed module:

"Contains Transmitter Module IC: " 20034-GX " or "Contains IC: 20034-GX" must

be used.

Pour un hôte, on utilise un modular, si (1) le numéro de module est non visible

Quand on est installé dans le serveur, or (2) si le propriétaire est commercialisé

Straightforward commonly used for the access to remove travail so that the number IC en vue

Le module est visible;Ensuite, le label permanent a été attribué au module:

"Contient le Module IC:" 20034-GX" ou "le contenu IC: 20034-GX" doit être

utilisé.

Revision history

Revision Page Description/Changes Responsible

0.1 All Godox information ZouQiang

0.2 6 External dimensions ZouQiang

0.2 9 Channel Frequency and Group control ZouQiang

Godox GX User manual

Brand: Godox

Model: GX

Type: User manual

This manual is also suitable for

GX-SEKONIC-A Wireless Module

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